Local Instability


Book Description

This monograph argues for a novel approach to split topicalization and quantifier float in German, based on the premise that syntactic structure-building proceeds solely via free application of Merge. Following recent developments in the pursuit of a more principled theory of syntax, it is argued that the stipulative notion of ‘projection’ ought to be dispensed with: syntactic objects created by Merge are not headed, and endocentricity arises due to a simple search algorithm. When this algorithm fails, specifically in symmetric {XP,YP} structures, an unlabeled constituent results; where a label is required, such structures are locally unstable. It is argued that both split topics and floated quantifiers are the result of this kind of local instability: when an exocentric predication structure is merged in argument or adjunct position, XP must be displaced at the phase level to allow for determination of a label. It is this symmetry-breaking movement that yields the ‘split constituent’ in surface form. Based on careful empirical scrutiny of two recalcitrant problems for syntactic theory, the present work adduces substantial support for a ‘minimalist’ grammatical architecture devoid of phrase-structural residue.







Stream Corridor Restoration


Book Description

This document is a cooperative effort among fifteen Federal agencies and partners to produce a common reference on stream corridor restoration. It responds to a growing national and international interest in restoring stream corridors.




Wartime Report


Book Description




Wartime Report


Book Description

Reproductions of reports, some declassified, of research done at Langley Memorial Aeronautical Laboratory during World War II. The order of reports does not represent when they were chronologically issued. Reference to the original version of each report is included.




NACA Wartime Report


Book Description




Troubleshooting Finite-Element Modeling with Abaqus


Book Description

This book gives Abaqus users who make use of finite-element models in academic or practitioner-based research the in-depth program knowledge that allows them to debug a structural analysis model. The book provides many methods and guidelines for different analysis types and modes, that will help readers to solve problems that can arise with Abaqus if a structural model fails to converge to a solution. The use of Abaqus affords a general checklist approach to debugging analysis models, which can also be applied to structural analysis. The author uses step-by-step methods and detailed explanations of special features in order to identify the solutions to a variety of problems with finite-element models. The book promotes: • a diagnostic mode of thinking concerning error messages; • better material definition and the writing of user material subroutines; • work with the Abaqus mesher and best practice in doing so; • the writing of user element subroutines and contact features with convergence issues; and • consideration of hardware and software issues and a Windows HPC cluster solution. The methods and information provided facilitate job diagnostics and help to obtain converged solutions for finite-element models regarding structural component assemblies in static or dynamic analysis. The troubleshooting advice ensures that these solutions are both high-quality and cost-effective according to practical experience. The book offers an in-depth guide for students learning about Abaqus, as each problem and solution are complemented by examples and straightforward explanations. It is also useful for academics and structural engineers wishing to debug Abaqus models on the basis of error and warning messages that arise during finite-element modelling processing.







Heterodox Macroeconomics


Book Description

p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 10.0px Arial} The last few decades have witnessed an outpouring of literature on macroeconomic models in the broad ‘heterodox’ tradition of Marx, Keynes, Robinson, Kaldor and Kalecki. These models yield an alternative analytical framework in which the big questions of our day – such as how inequality is related to growth or stagnation, and whether long-run growth is stable or unstable – can be fruitfully addressed. Heterodox Macroeconomics provides an accessible, pedagogically oriented treatment of the leading models and approaches in heterodox macroeconomics with clear, step-by-step presentations of core models and their solutions, properties and implications.




The Economics of Poverty Traps


Book Description

What circumstances or behaviors turn poverty into a cycle that perpetuates across generations? The answer to this question carries especially important implications for the design and evaluation of policies and projects intended to reduce poverty. Yet a major challenge analysts and policymakers face in understanding poverty traps is the sheer number of mechanisms—not just financial, but also environmental, physical, and psychological—that may contribute to the persistence of poverty all over the world. The research in this volume explores the hypothesis that poverty is self-reinforcing because the equilibrium behaviors of the poor perpetuate low standards of living. Contributions explore the dynamic, complex processes by which households accumulate assets and increase their productivity and earnings potential, as well as the conditions under which some individuals, groups, and economies struggle to escape poverty. Investigating the full range of phenomena that combine to generate poverty traps—gleaned from behavioral, health, and resource economics as well as the sociology, psychology, and environmental literatures—chapters in this volume also present new evidence that highlights both the insights and the limits of a poverty trap lens. The framework introduced in this volume provides a robust platform for studying well-being dynamics in developing economies.